Unloading device.



. U w. 9 I u l. d e t n e t a P N 0 S N H 0 J P .r 8 m 7 6. 0

UNLUADING DEVICE.

(Application filed Apr. 18, 1999.

(No Model.)

Inventor.

' \N'innesses.

Attorneyzfi UNITE STATES? PATENT OFFIC FRANK P. JOHNSON, OFWALTHAM,MASSACHUSETTS.

UNLOADING DEVICE.

SPECIFICATION forming part of Letters Patent No. 678,108, dated July 9,1901.

Application filed April 18, 1899- To all whom it may concern.-

Be it known that I, FRANK P. JOHNSON, of

the city ofWaltham, county of Middlesex, Commonwealth of Massachusetts,have invented a new and useful Improvement in Breaking-Out or UnloadingDevices, of which the following is a full, clear, and exact descriptionwhen taken in connection with the accompanying drawings, which form apart thereof, and in which Figure 1 represents a section of a vessel andin side elevation a breaking-out or unloading device embodyingmyinvention; Fig. 2, a vertical section of my device on lines 2 2 ofFig. 1; Fig. 3, a vertical sect-ion on lines 3 3 of Fig. 2, and Fig. 4 asimilar view of another form of the device.

In all figures similar letters of reference represent like parts.

This invention relates to devices for unloading cargoes laden in bulkfrom vessels or other receptacles. In unloading vessels of liquid orsemiliquid cargo-such as grain, coal, sand, pitch, molasses, oil, andother similar substancesladen in bulk a considerable portion of theexpense is incurred in unstowing such a portion that the operators maywork on a level or a smooth surface and easily unload the remainder.

This invention has for its object the production of a device for readilyaccomplishing this breaking out of the cargo; and it consists of thecombination of parts more fully set forth hereinafter.

Referring to the drawings, the parts desig-' nated by the letter Arepresent the section of a vessel in which the cargo B of coal or othersubstance is laden in bulk.

0 represents a removable bottomless hollow box or receptacle forming aninclosure in the vessel, from which the cargo is excluded. The box orreceptacle 0 may be formed in sections 0 and 0 as shown in Figs. 2 and3, so that it may be built up to the desired height. On the sides of thebox or receptacle areopenings E, permitting egress of the cargo into theinclosure, and the openings are closed when desired by slides or gatesor valves F, controlled or operated by rods G, which may be jointed, asshown at H, to correspond with the height of the box or receptacle O.Inclined chutes or guides are shown on the inside of the openings E, andpivoted to their inner ends may be extension-chutes Serial No. 713,521.(No model.)

K, which are swung on their pivots by rods chutes K are turned up to theposition shown in Fig. 3 on the right to prevent egress into theinclosure, and the cargo is then filled in about the box, Fig. 1. Whenit is desired to break out the cargo, the slide or gate F is pulled awayfrom one of the openings or the valve opened to allow the cargo to passthrough the opening into the bucket. In case the extension-chutes K areused they are lowered into the position shown on the left, Fig. 3. Byopening the various gates or extension-chutes all that part of the cargodesignated by the letter B. is gradually allowed to enter theinclosure,from whence it is hoisted by the bucket or other suitable means. Whenthe cargo is broken out sufficiently, the box C may be removed and alevel or smooth floored spot in the midst of the cargo is provided, fromwhich the operators may work on the remaining portion of the cargo. I amaware that wells or shafts have been permanently built into vessels foruse in unloading cargoes, and I therefore do not claim, broadly, theidea of a shaft or well for such a purpose. 1'

Having now described my invention, what I claim, and desire to secure byLetters Patout, is-

The combination with a vessel A; of a removable bottomless shaft 0adapted to rest on the flooring of said vessel, so that the cargo may beplaced about it, and provided with openings E in its sides and gates forsaid openings, said shaft being adaptedto be removed when the cargo isbroken out above said openings, substantially as described.

In witness whereof I have hereunto set my hand this 8th day of April, A.D. 1899.

i FRANK P. JOHNSON. Witnesses:

SAMUEL H. FISHER, ELIZABETH K. PENDLETON.

